Radio cabinet and shockmount base



Sept. 17, 1946. H. WINCHEL 2,407,804

RADIO CABINET AND SHOCKMOUNT BASE Filed April 5,- 1943 INVENTOR. 24 24 HENRY T. ,VIINCHEL- Patented Sept. 17, 1946 RADIO CABINET AND SHOCKMOUNT BASE Henry T. Winchel, North Hollywood, Calif., assignor, by mesne assignments, to Bendix Aviation Corporation, South Bend, Ind, a corporation of Delaware Application April 5, 1943, Serial No. 481,899

4 Claims. I (oi. 174- 51) This invention relates to radio cabinets, and more particularly to a combined shockmount and radio cabinet, suitable for fabrication from sheet metal.

It is an object of the invention to provide a cabinet and shockmount having a novel mounting base which permits rapid installation and removal of the radio cabinet.

Another object is to provide a mounting base for a radio cabinet permitting the locking of the cabinet to the mounting base by a single turn of a thumbscreW.

Still another object is to provide a cabinet cover, which is secured to its base by the combination of a pair of fixed pin fitting holes and a single screw.

A further object is to provide a cabinet construction wherein the cover meets the base with a flush contact.

Other objects and advantages of the invention will be apparent in the following description and claims.

In the drawing forming a part of this specification:

Figure 1 is an elevation view in full section of the cabinet and shockmount of this invention.

Figure 2 is a sectional View of the cabinet along the lines 2-2 of Figure 1; and

Figure 3 is a fragmentary sectional View of the cabinet along the line 33 of Figure 1.

Referring to Figure 1, a sheet metal mounting base H! of open top box shape may be secured to any desired structure; for example, the frame of an airplane when the radio is for airplane use. Two tapered pins [2 are secured to the left or rear wall of mounting base id, as by spinning or riveting, and projecting inwardly. Fastened to the right or forward wall of mounting base I is a length of spring wire 84 placed over a hole It in that wall.

Adapted to be placed upon mounting base it is a shockmount base !8, of inverted open box construction. The left or rear wall of this base fits inside of mounting base id, but the other three walls fit outside mounting base l0. Holes 20 in the left or rear wall fit over pins l2 to hold the shockmount base iii to mounting base I0. On the right wall of shockmount base 18 is a thumbscrew 22 having a spirally slotted shank such as to receive spring wire l4 and lock upon that wire when rotated, as well known in the art. Thumbscrew 22 is oppositely rotated to release wire l4, and thereafter the cover l8 may be moved forwardly, or to the right, to be released from pins l2.

Shockmounts 24 are secured to base I8 and the forward mounts are grounded by a jumper 26. Inasmuch as jumper 26 and shockmounts 24 may catch on the forward or right wall of mounting base ill, a guide 28 is provided which will be contacted by the mounting base, leaving jumpers 26 uninjured.

Secured to shockmounts 24 by screws 30 is a dished cabinet base 32. Screws 34 are threaded into hexagonal spacing posts 31 spun onto a chassis 135 to hold the radio chassis 35 to base 32. Holes 36 are provided in mounting base l8 to permit access to and removal of the screws 34, so that the chassis 35 may be removed for any desired purpose. Chassis 35 has two stub pins d6 spun thereon. Cabinet base 32 has a right or forward wall 38 terminating in an angle member 40. Secured to angle 46 is a spring wire t2 passing over a hole 44.

Placed over chassis 35 is a cabinet cover 48 having holes 50 in the rear or left wall which fit over pins 46. Cover 48 makes a close contact with dished base 32 and the construction results in a flush contact of cover 48, with the base 32. The right or forward end of cabinet cover 48 is held down by a screw 52 having a spiral slot which permits it to look upon spring wire 42.

The construction of the forward or right end of the cabinet is shown in Figure 3. There it will be noted that the edges of front plate 38 are backed by strips 39, permitting the edges of cover 48 to lie flush with the major portion of face 38. A handle 56 is fastened to cover 48 so that the entire cabinet and shockmount base may be carried about as a unit.

In operation, the cabinet 48 and S2 and shockmount base l8 may be removed from mounting base ill by rotating thumbscrew 22 until it releases wire M. Handle 55 is then grasped and the set moved manually forward until pins l2 are released, after which the unit is free of mounting base lil. During this operation guide 28 may contact the right wal1 of mountin base I E! preventing injury to jumper 26.

If it is desired to remove cover 56, a screw driver is used to rotate screw 52 to unlock wire 42 from screw 52 and the cover at is rotated about pins 45 until the right corners of chassis 35 are cleared. Then the cover 48 is moved to the left releasing it from pins 4%, whereupon it is free to be removed. If it is desired to remove the chassis; screws 34 are removed, allowing the chassis to come free of all other structural parts.

Although the invention has been described with reference to a particular embodiment thereof,

3 it is not intended to limit the invention to this embodiment, or to the description, or otherwise except by the terms of the following claims.

I claim:

1. A radio cabinet mounting comprising a shockmount base in combination with a mounting base, said mounting base including inwardly projecting pins, and means to which a screw may be fastened, said shockmount base comprising a downwardly projecting surface having holes therein to match said pins, and screw means to engage said screw fastening means.

2. A mounting base for use with a shockmount base having downwardly-extending side walls at opposite edges, one of which side walls has holes therein, and the other of which has a screwtype securing means, said mounting base comprising a shallow, open-top box having one upwardly-extending side wall with pins projecting inwardly for engaging the holes in the one side wall of the shockmount base and having an opposite upwardly-extending wall containing means for engagement by said screw-type securing means of the shockmount base.

3. A shockmount base adapted to be secured to a mounting base having opposite upwardlyextending side walls, one of which contains in wardly-extending pins, and the other of which contains means for engagement by screw-type securing means; said shockmount base comprising a plate having downwardly extending side walls at opposite edges, one of which side walls has holes therein adapted to engage said pins of the mounting base when positioned within the wall containing said pins, and the other of which side walls is adapted to rest against the outer surface of the other side wall of the mounting base and includes screw-type securing means for detachably securing said last-mentioned walls together, whereby said shockmount base is removable from said mounting base following disengagement of said securing means by sliding movement to disengage said holes from said pins, said shockmount base having shockmounts secured thereto and extending therebelow, a grounding jumper connecting at least one of said shockmounts to said plate and extending therebelow, and a shielding member extending over said jumper to protect it from injury during movement of said shockmount base to detach it from said mounting base.

4. A radio cabinet mounting having on the under side thereof a shockmount base having downwardly-projecting side Walls at opposite edges thereof, a mounting base including a floor member having upwardly extending walls at opposite edges thereof, one of which is adapted to be positioned exterior of one of said downwardly projecting walls on the shockmount base, and having pins projecting inwardly therefrom, holes in said one downwardly-extending wall for engagement by said pins, the other downwardlyextending wall of said shockmount base being adapted to rest against the outer surface of the other upwardly-extending wall of the mounting base, and screw-type securing means on said other downwardly-extending wall, and means for engagement by said screw-type securing means on said other upwardly-extending Wall for securing said other walls together.

HENRY T. WINCHEL. 

